Car-truck



(No Model.) 3 Sheets-Sheet 1. W. KOEDDING.

OAR TRUCK.

No. 495,894. Patented Apr. 18, 1893.

ml J Lam 1% (No Model.) 3 Sheets-Sheet 2'.

W. KOEDDING.

GAR TRUCK.

No. 495,894. Patented Apr. 18, 1893.

nus-mums PETERS co, PHOTO-MING" mswmmom n. c.

GAR TRUCK.

Patented Apr. 18, 1893.

Tnz Nonms PETERS co. PHOTO-LITHCL, WASHlNGTDN. a c.

UNITED STATES PATENT OFFICE.

IVILLIAM KOEDDING, OF ST. LOUIS, MISSOURI.

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 495,894, dated April18, 1893.

Application filed July 6,1892. Serial No.439,l67. (No model.)

To all whom it may concern;

Be it known that I, WILLIAM KOEDDING, of the city of St. Louis, in theState of Missouri, have invented a certain new and useful Improvement inOar-Trucks, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specification.

My invention relates to certain improvements in car trucks, intendedmore particularly for use on street-cars; and my invention consists infeatures of novelty hereinafter fully described and pointed out in theclaims.

Figure I is a top or plan view of my improved truck. Fig. l[ isa sideelevation, showing part of the car body broken away. Fig. III is avertical, detail section of the track brake, taken on line III-III, Fig.IV. Fig. IV is a similar view, taken on line IVIV, Fig. III. Fig. V is aview similar in all respects to Fig. IV, but showing the parts in adifferent position. Fig. VI is a perspective view of the track brakehead which'holds the shoe that bears upon the brake. Fig. VII is atransverse section taken on line VIIVII, Fig. VIII, and showing myinvention as ap plied to a pivotal truck. Fig. VIII is a Iongitudinalsection, taken on line VIIIVIII, Fig. VII. Fig. IX is a bottom view ofthe upper member of the fifth wheel of a pivotal truck; and Fig. X is atop view of the lower member of the fifth wheel.

Referring to the drawings, 1 represents part of a car body. 2 representsthe track wheels; 3 are the axles of the track wheels, and which arejournaled in the usual boxes 4. 5 represents a truck frame, to which myinvention in part relates. The frame is composed of an upper chord ormember 5, and a lower chord or member 5 on each side of the car; theupper and lower chords on each side of the truck are connected togetherby vertical end portions 5, by vertical, central portions 5, and byvertical axle box portions 5. The axle boxes fit between the verticalconnecting portions 5 and are thus held in the frame, as shown clearlyin Fig. II. 5 represents strips or bars secured to the lower chord 5beneath the axle boxes. Projecting from each end of the lower chord isan arm 5 to which the usual guard of street cars may be secured.

I have described one side of the truck frame,

the other side being a duplicate of it. Each side is cast with all ofthe parts which I have enumerated in one piece, so that there is nodanger of the parts becoming loose, and so that the frame is perfectlystrong and durable. The two side parts which thus constitute the frameare connected by cross bolts or rods 6, of which there may be anysuitable number, and from which the wheel brake mechanism is suspended,as hereinafter explained.

The car body is supported on the truck frame 5 by means of bolts 7secured to the body or to plates 8 which are made fast to the body; saidbolts passing down through the upperand lower chords of the frame andsurrounded by springs 9 between the upper and lower chord, and uponwhich bear disks or washers 10 secured to, or formed upon the bolts 7,so that the depression of the bolts will cause the compression of thesprings.

To prevent oscillation of the car body, I connect the body to the upperchord of the frame by means of bolts 11,which pass down through theupper chord of the frame, and which are surrounded by springs 12 locatedbetween nuts or washers on the lower ends of the bolts, and the upperchord of the frame, as shown clearly in Fig. II.

13 represents the removable shoe or die of the track brake supported ina head 14, (see Figs. II, III, IV, V and VI.) The head of the shoe ispivoted at 15 to a vertically moving block 16, held in a sleeve orcylinder 17, which is made fast, as shown at 18 to the lower chord ofthe frame 5, and to an extension 19 on the lower chord of the frame.

20 represents a rock shaft journaled to the upper ends of the sleeves orcylinders 17, (there being a sleeve or cylinder 17 on each side of thetruck frame,) and to this rock shaft is secured an arm 21 to which thebrake rod 22 is made fast. On the rock shaft are projections 23connected by links 24 to the block 16 of each brake-shoe, as shown at25, Figs. IV and V. The lower ends of the links 24 are slotted toreceive the pin 25, and it will be understood that when the shaft 20 isrocked in one direction, the brake-shoe will be forced downwardly uponthe truck by one of the links 24, and when the rock shaft is moved inthe other direction, the brake shoe will be forced down by the otherlink 24; the slot in the link which is not being used to produce thepressure, simply moving on the pin 25 so that this link does notinterfere with the movement of the brake shoe by the other link.

26 represents springs for lifting the brake shoe from the track when therock shaft is brought to a position of rest; the lower ends of thesesprings bearing against the bottom of the projections 19, and theirupper ends bearing against the projecting ends of the pins or againstblocks 25 fitted on the projecting ends'of the pins 25, (see Fig. III.)

27 represents the shoes of the wheel brakes. These shoes are suspendedby links 28 from the upper connecting rods 6 of the truck frame.

29 are the beams of the brake shoes 27, (see Fig. VIII.)

30 is a lever pivoted at 31, and to which the pull rod 32 of the wheelbrakes is connected.

33 is a rod connecting the far beam 29 to the lever 30, and 34 are linksconnecting the lower end of the lever 30 to the near beam 29.

35 is an arm secured to the pivot 31, and which is provided with aspring 36 for holding the shoes from the wheels when the brakes are notapplied.

In Figs. VII to X, I have shown the invention applied to a pivotaltruck, in which 40 represents the bolster, upon which rests a disk 41having an annular groove 42 to receive friction balls 43. 44 representsa disk secured to the car body, and which rests upon the balls 43. 45represents the king or connecting bolt. The pivotal point between thetruck and the car body is thus constituted of a ball bearing.

The bolster 40 is preferably composed of an inverted angle iron, asshown clearly in Fig. VIII, which fits over a lower beam 46 secured tothe car truck by means of bolts 47 passing down through the upper chordsof the truck frame, and provided with springs 48 which fit between nutsor washers on the lower ends of the bolts and disks 49 made fast orsecured to the bolts 47 directly beneath the upper chord of the frame.

For the purpose of preventing lateral oscillation of the car body, inthe use of the pivotal truck, I connect the outer ends of the beams 40and 46 by means of bolts 50, surrounded by springs 51, and to guardagainst end vibration of the car with the piv-v otal truck, I providethe bolster 40 with lateral extensions 52 from which depend bolts 53that extend down through the truck frame, and are provided with springs54 between washers 55 fitting respectively against the inner surfaces ofthe upper and lower chords of the frame, and which are made fast to thebolts 53.

If desired, the shaft 20 may be provided with a sleeve 20 surroundingitbetween the two sides of the truck frame, and to which the levers orarms of the brake rods may be secured, as shown in Figs. II and III.

I claim as my invention- 1. A car truck frame having side members, eachconsisting of an upper and lower chord, having connecting portions andguard extensions cast integral; substantially as set forth.

2. The combination, in a car truck, of the side members, boltsconnecting the side members, a track brake, a block to which the shoe ofthe track brake is pivoted, a rock shaft, means for moving the rockshaft, slotted links connecting the rock shaft to said block, and ahousing or cylinder in which said block moves; substantially as setforth.

3. The combination in atrnck frame, of the brake shoes 14, a block 16 towhich the shoes are pivoted, a rock shaft, arms 23 on the rock shaft,and slotted links 24 connecting said arms to said block;substantially asset forth.

4. In a pivotal car truck, the combination of a truck frame, a bolster40, a grooved disk secured to said bolster, a disk secured to the carbody, friction balls adapted to fit between said disks, a beam 46, andspring bolts connecting said beam 46 to the truck frame; substantiallyas and for the purpose set forth.

5. In a car truck, the combination of a truck frame, bolster 40 securedto the car body, spring bolts 51, a beam 46 secured to the truck frame,and spring bolt 53 connecting the bolster 40 to the truck frame;substantially as and for the purpose set forth.

6. In a car truck, a frame composed of an upper and lower chord, axlebox, portions 5 cast integral with the upper and lower chords, saidupper and lower chords having seatscast upon them for springs 9 and 12;substantially as and for the purpose set forth.

WM. KOEDDING. In presence of- ED. S. KNIGHT, ALBERT M. EBERSOLE.

